Alva Lysander Hager (October 29, 1850 – January 29, 1923) was a three-term Republican U.S. Representative from Iowa's 9th congressional district in the 1890s.

Born near Jamestown, New York, Hager moved in 1859 to Iowa with his parents, who settled near Cottonville, in Jackson County.

In 1892, the U.S. House seat for Iowa's 9th congressional district was open because incumbent Democrat Thomas Bowman did not seek a second term.

For several days, no candidate received the required number of votes, but McPherson prevailed on the 618th ballot, after Hager threw his support to him.

This article incorporates public domain material from the Biographical Directory of the United States Congress